# Lot number/IMEI serial tracking

Lot/IMEI Serial tracking enables determining where a specific part or its lot was used. 

Tracing identities of the Lot/IMEI number of each part and the lot/serial controlled components that went towards its production.

### **Enabling lot number**

To enable lot number go to, `Settings -> Business Settings -> Purchases`

Check the Enable Lot number checkbox and update settings.

### **Adding Lot/IMEI number from purchases**

If the lot number is enabled as described above then when adding purchase stock it will display the lot/IMEI number field for entering the lot numbers.

{% hint style="info" %}
**Setup Guide:**

To use the IMEI serial tracking system while purchasing, Go to `Add Purchase -> Lot/IMEI Number`<br>

To add every product's IMEI serial number add the single product for each line and add the IMEI number with your lot number. \
\
**For Example -**\ <mark style="color:red;">Lot1</mark> - <mark style="color:purple;">IMEI Number 1,</mark> <mark style="color:purple;">IMEI Number 2</mark>\ <mark style="color:red;">Lot1</mark> - <mark style="color:purple;">IMEI Number 1, IMEI Number 2</mark>

If you don't have IMEI numbers of your products, like food, fashion, electronics, etc, just add the Lot number only.

**For Example** - <mark style="color:red;">Lot1</mark>
{% endhint %}

<figure><img src="/files/PBphhgraK60xOrzyvvuX" alt=""><figcaption></figcaption></figure>

### Adding lot number from adding opening stock

If lot number is enabled then when adding opening stock it displays the input field to enter the lot number.

### Selling products from the specific lot

Refer to the POS selling documentation Lot number description.

### Displaying product lot number in the invoice

* Make sure the lot number feature is enabled as mentioned above.
* Go to invoice layout and enable “Show lot number”
* If the lot number is added when adding Purchase or Opening stock then when making sales it will display the lot number & product expiry dropdown.&#x20;
* Select the lot number which you want to sell.&#x20;
* Then in the print invoice, it will show the lot number.


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